Statistics for occurrence #1 of “Boston Harbor” in entry boston of Harper's Encyclopedia of United States History:

...g commissions, took every opportunity that offered to attack those of Bristol, and other western ports, that adhered to the King. In July, 1644, a London vessel brought a West-of-England prize into Boston Harbor . The captain exhibited a commission from Warwick, High Admiral of New England, and they were allowed to retain their prize; but when another London vessel attacked a Dartmouth ship (September), as ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Boston Harbor (Massachusetts, United States) 627 82 1 0 0 user votes
Boston Harbor (New Hampshire, United States) 0 0 0 0 0 user votes
Boston Harbor (Washington, United States) 0 0 0 0 0 user votes
Boston Harbor (Washington, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.